Washington Nationals outfielder Bryce Harper returns to the dugout at Miller Park after clubbing his 16th home run of the season in the Nationals' 4-1 win over the Milwaukee Brewers. (Associated Press photo)
Washington Nationals manager Davey Johnson watches from the dugout during the eighth inning of a baseball game against the Detroit Tigers in Detroit, Tuesday, July 30, 2013. (AP Photo/Carlos Osorio)
Washington Nationals left fielder Bryce Harper stands in the outfield as fans celebrate the solo home run by Detroit Tigers' Torii Hunter during the second inning of a baseball game in Detroit, Wednesday, July 31, 2013. (AP Photo/Carlos Osorio)
Washington Nationals relief pitcher Ross Ohlendorf rubs his head after being pulled during the fourth inning of a baseball game against the Detroit Tigers in Detroit, Wednesday, July 31, 2013. (AP Photo/Carlos Osorio)
Washington Nationals' pitcher Stephen Strasburg makes his way back to the mound as Detroit Tigers catcher Alex Avila rounds the bases following his sixth-inning grand slam on Tuesday night. (Associated Press photo)
Washington Nationals' Wilson Ramos (40) acknowledges the crowd after his grand slam during the third inning of a baseball game against the New York Mets at Nationals Park, Sunday, July 28, 2013, in Washington. (AP Photo/Alex Brandon)
Washington Nationals shortstop Ian Desmond and center fielder Denard Span celebrate their back-to-back home runs in a win over the New York Mets. (Associated Press photo)